I need to know how the door ajar is activated. There is nothing in the manuals that I have that reference it. I have checked the fuses. All of the other doors activate the panel light.
driver door does not activate door ajar indicator on 2002 Volkswagen Jetta TDI
It in your door latch it's called a Micro Switch door latch I am having the same problem and am still trying to find the part to replace it you may be able to get it from the dealer if not from them the junk yard would be your last resort.
Most likly you need a door latch. Lower the window on the door in question and set the alarm. Open the door for the inside. The alarm should go off, if not replace the latch.